"Happy to be back! Feeling healthy & working on tons of new music. I can't thank my fans enough for all the love & support u have given me," the 27-year-old pop star tweeted Thursday on her newly renamed social media account. What had for years been the self-deprecating @keshasuxx is now @KeshaRose, and her name in the bio is spelled with a plain old "s" in the middle. She'd previously posted a photo taken from an airplane seat.

"life is beautiful. I'm so blessed to have u all," the "Timber" and "Tik Tok" singer added shortly after.

The singer's rep confirmed to E! News that the online name makeover was for real.

Kesha had entered rehab in early January, planning a 30-day stay for treatment of an eating disorder at Timberline Knolls outside Chicago. That's the same facility where Demi Lovato overhauled her life starting at the end of 2010.

"I'm a crusader for being yourself and loving yourself but I've found it hard to practice," Kesha said at the time on Facebook. "I'll be unavailable for the next 30 days, seeking treatment for my eating disorder ... to learn to love myself again. Exactly as I am."

In early February, she extended her stay and canceled tour dates in March and April, saying in a statement to People: "I was so looking forward to performing at these dates but I need to follow my doctor's advice and get my health back on track."

The magazine said Kesha's return from rehab was a surprise, even to people close to her, who had "no timeline" for when she'd be done.